* {
  padding: 0;
  margin: 0;
  overflow: hidden;
}

*, *::before, *::after {
  box-sizing: border-box;
}

.overlay-wrapper {
  line-height: 24px;
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.5);
}

.overlay-body {
  background-color: white;
  padding: 32px;
  border-radius: 5px;
  box-shadow: 0 0 64px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.15);
}

.overlay-title {
  padding: 15px 0;
  text-align: center;
  font-size: 24px;
  font-weight: bold;
}

.overlay-input input {
  display: inline-block;
  width: 100%;
  padding: 8px 12px;
  line-height: 24px;
  font-size: 16px;
  font-family: "Roboto";
  background: none;
  border-radius: 5px;
  border: solid 1px gray;
  margin-bottom: 6px;
}

.button-group {
  display: flex;
  justify-content: space-between;
  flex-direction: row;
  align-items: flex-start;
}

#button-play {
  cursor: pointer;
  display: inline-block;
  padding: 10px 12px;
  line-height: 24px;
  font-size: 16px;
  font-family: "Roboto";
  font-weight: bold;
  color: white;
  text-transform: uppercase;
  border-radius: 5px;
  border: none;
  width: 100%;
  background-color: green;
}

#button-play:active{
  transform: scale(0.95);
}

.overlay-bottom {
  display: flex;
  justify-content: space-between;
  flex-direction: row;
  align-items: flex-start;
}

.help p {
  display: block;
  margin-top: 8px;
}

.settings label {
  display: block;
  margin-top: 8px;
}

.version {
  position: relative;
  font-size: 12px;
  color: gray;
  bottom: 0;
  text-align: center;
}

#canvas {
  display: block;
  z-index: -1;
}
